7 port oil leak help required
Turbo Mini Forums

I know it's early am over there but I have a question about the 7 ports heads. I have one on my daily drive but for the life of me I can't seem to get it to seal around the oil feed to the rockers. It pees oil out from behind the hole in the gasket. I've tried a copper gasket and now a bk450 and both piss oil. any suggestions ?

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

Is it definitely coming from the feed? and not from the rocker bock gasket?

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

it's dry above the gasket line so it's not rocker cover or anything from the front of the engine. can clearly be seen running down from that area of the head gasket but coz of the super massive zoort it's a pain to take a pic or video to show but I'll try to get evidence tomorrow.

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

never seen a leak from there before. Every time it's been blamed it's always turned out to be from above (several threads on here).

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

Well ... the oil leak got to the point of filling the car with smoke on Wed night on the way home from work. Stopped on the fwy { motorway to you folk } and had a look ... hmm about 2 lts of quality oil now on the outside covering the back of the block, gearbox, firewall and road .....phucker.
So after being towed home on a rope ....I ripped the hed off, Thursday it wen't and got checked for flatness, being straight and hardness .....came back ok :)
14 hr work day Thurs = no shed time, Friday night I oil stoned the head face and block top, had a beer and called it a night.
Yesterday ....modded the inlet ports to take a 5/16th barbed fitting for the IAC { later project but while it was apart} fitted a 73.5 dry deck Cometic gasket { thanks MED} ate a few beers and stuck it all back together, warmed it up and using the water temp controller cranked it up to 99 deg and let it run for 30 mins to allow a heat cycle to do it's thing.
Toady I'll re-torque the head and reset the valves, fit the slam panel, grille and go for a drive.
hope this fixes my oil leak but if not I have a plan to make an external fed from the block to the rockers thus avoiding the dumb way the oil is fed from the block along the gasket, up a head stud and to the rockers.

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

Which make of 7 port head is it ?

A few weeks ago I was reading a post on another forum that one particular make of the 7 port doesn't have a matching drilling for the oilway but has a groove machined across its face to link the standard drilling in the block to it's route which appears to be one of the stud holes rather than a normal drilling.

Now obviously I was reading rather vague descriptions but it seemed quite bizarre as it would mean the seal built into the gasket would simply be bypased and the normal gasket base material subjected to the oil flow rather than a proper sealed pathway.

On that basis, I ignored the thread and I've never seen one anyway but does your head have a drilling - a simple circular hole - that matches the one in the block and hence should be sealed. All the gaskets I've sen have a purpose made seal of some sort around the hole, the one on the MPI version (the one slightly newer than the BK450 but I've forgotten its number) is actually a built-in "o" ring.

Schrödinger's cat - so which one am I ???

It's Pierce head with the horizontal oil passage along the gasket. yes it looks bit suss but if the MLS gasket doesn't work I have a plan to run the rocker feed external to the block.

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner